zone valve controls - Page 1 | Plumbing & Mechanical

Heating Perceptions | Scott Secor

From cutting edge to classic: How to modernize outdated pneumatic control systems

A look at how a once state-of-the-art pneumatic control system has aged, and what it takes to modernize it.

November 21, 2025

On this job, I was reminded of how this “cutting edge” system that was installed fifty years ago is now considered "old school."

Contractor Profile | Northern Massachusetts hydronics

Contractor follows in footsteps of treasured trade mentor

John Vastyan

September 18, 2023

Blake Rosenberg is an inspired plumbing and hydronic pro in the Northern Massachusetts area who readily admits that his inspiration and success stem from the influence of a special mentor. Well, two of them.

John Siegenthaler: Modifying high-temperature distribution systems for lower-temperature operation — part two

Part two of a series

John Siegenthaler, P.E.

January 3, 2023

As with most things hydronic, there are multiple approaches, and the “best” approach for each installation has to consider cost, aesthetics, access to the existing piping, available wall space and the goal of how the overall system will operate based on existing or newly created zones.

tekmar adds four switching relay and zone valve control models

November 26, 2019

tekmar Control Systems announced the addition of four new switching relay and zone valve control models to their existing line of zone control solutions.